Many substances can go through physical and chemical changes. Which of the following is an example of a physical change? Questio n 6 options: using heat and oxygen to burn wood using heat to scramble an egg mixing CO2 , water, and sugar to form soda mixing baking soda with vinegar to form CO2
1 answer:
Mixing baking soda with vinegar to form CO2
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Answer:
d. 1.2 × 1024
Explanation:
From the equation of reaction
2H2 + O2= 2H2O
i.e 2mole(4g) of hydrogen requires 1 mole(32g) of oxygen to produce 2mole (2×6.02×10^23 molecules) of H2O= 1.2×20^24 molcules of water.
NB: 1 mole of H2O contains 6.02×10^23 molecules of H2O
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<em><u>Please</u></em> <em><u> </u></em> <em><u>mark</u></em> <em><u> </u></em> <em><u>may</u></em> <em><u> </u></em> <em><u>be</u></em> <em><u> </u></em> <em><u>brainliest</u></em> <em><u> </u></em> <em><u>answer</u></em> <em><u>.</u></em> <em><u> </u></em> </h2>
I think the answer is something within..
It always has birds, it's in the South.
Answer:
we need to know which atom you're talking about and then you need to say what the mass number is then we can tell how many electrons there are.
(I think)
